I have two 2182's & 1882 One of the 2182's does not have the ground speed of the other one. The other 2182 seems to be evenly matched with the1882. I also have a 1541,1641,1862 & 1811 . They all seemed very equal except for the one 2182 . Were their different rear end gears available ? It doesn't seem to have more pulling power . Like you would associate with with a steeper set of gears. As in 4:10 vs 5:13 ( just an example). Its ground speed is just slower , forward & reverse. The RPM's seem about the same for both 2182's . It functions just as well as the other one. Just seems odd to me. I'm eager to read some other the reply's from some that know more. Thanks.